Anorexia nervosa, bulimia nervosa and obesity are common eating disorder. Anorexia nervosa is
characterized by limited eating with the fear of gaining weight. Although the individual is under weight, they consider
themselves fat. These people are markedly underweight.
The main feature of bulimia nervosa is episodes of excessive intake of food followed by self-induced vomiting.
Obesity can be due to a lot of medical conditions. However, some psychiatric issues can also lead to obesity. One is atypical depression. In this condition patient is depressed and his/her appetite markedly increases
Treatment of eating disorder consists of weight restoration, cognitive behavior therapy (CBT). Medicines are not always required. However, if the condition is severe or not responding to psychotherapy, then use of medicine becomes necessary.